"I'm concerned about any zoo permitted to hold an extreme event with such deafening volumes of sound and we all know that animals' ears are really sensitive ... it was just basically on the same slope of the hill as this deafening, deafening sound," she said.

"You can't have it both ways - either you have a family-friendly agri-tourist business with the farm and the zoo or you have extreme events.

"But you don't hold deafening events and vehicle rallies and fireworks - that's not the kind of event that you hold in combination with animals."